a
b
c
c/a
c/b
b/a
c/b/a
c//a
c//b
b//a
c//b//a
c/b//a
c//b/a
/a
/b
/c
/c/a
/c/b
/b/a
/c/b/a
/c//a
/c//b
/b//a
/c//b//a
/c/b//a
/c//b/a

